[Eeglablist] external channel locations

[Makoto Miyakoshi]

Dear Raquel,

I suggest you use AFp9 and AFp10 EEG channels. For VEOG, you need to make
up dedicated channel locations. I thought I've seen VEOG channels in the
EEGLAB's available channel list i.e., just enter SVEOG and IVEOG (or
something like that; these list could be seen in head model setting GUI)
and 'look up locs' and their default locations are automatically retrieved.
Actually, I think I've seen it in this list recently.

Makoto

Makoto

On Mon, Jul 25, 2016 at 5:54 AM, Raquel London <
raquel at dragondelapatagonia.com> wrote:

> Dear EEG labbers,
>
> I am struggling with the channel locations. When I import them (Biosemi,
> 64 electrodes, 10/20 system) I use a file that only has the locations of
> the 64 electrodes. Once imported, the external channels are not there
> anymore.
> However, I still need them to compute the bipolar VEOG and HEOG for the
> ICA. I was wondering how I could solve this.
>
> Does anyone have a channel location file I could use that includes
> external electrodes?
> Can I modify the file and add locations for the externals? If so, how do I
> calculate the position or can I just invent something?
> Or is there another way to keep the channels that have not been assigned a
> location through the chanlocs file?
> Or am I just thinking about this in the wrong way?
>
> Any help is much appreciated!
>
> Raquel
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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